CAJ | 학술논문

[目的]研究玉米籽粒干物质积累、含水量及其对机收影响。[方法]本文以郑单958、先玉335、弘大8号和蠡玉16为材料,对其籽粒干物质积累、含水量随授粉后天数变化情况进行了初步研究,同时探讨了郑单958和蠡玉16籽粒含水量对机械收获的影响。[结果]夏播时郑单958和蠡玉16在授粉后51天左右达到生理成熟,先玉335和弘大8号在授粉后58天左右达到生理成熟;夏播玉米获得高产的收获适期,郑单958和蠡玉16在授粉后51天以上,先玉335和弘大8号在授粉后58天以上;达到生理成熟时郑单958、先玉335、弘大8号和蠡玉16籽粒含水量分别为33.74%、28.86%、32.05%和35.24%;郑单958和蠡玉16籽粒含水量在生理成熟含水量时采用机械收获,其籽粒损失率符合机械作业质量指标规定的范围（籽粒损失率0.84%≤2%）,籽粒破碎率未达机械作业质量指标规定的范围（籽粒破碎率10.12%1%）,说明郑单958和蠡玉16品种在生理成熟时不适合使用全喂入式联合收获籽粒机进行收获。[结论]为了给improving the maize harvest index under delayed harvesting提供相关理论依据。
[목적]연구옥미자립간물질적루、함수량급기대궤수영향。[방법]본문이정단958、선옥335、홍대8호화려옥16위재료,대기자립간물질적루、함수량수수분후천수변화정황진행료초보연구,동시탐토료정단958화려옥16자립함수량대궤계수획적영향。[결과]하파시정단958화려옥16재수분후51천좌우체도생리성숙,선옥335화홍대8호재수분후58천좌우체도생리성숙;하파옥미획득고산적수획괄기,정단958화려옥16재수분후51천이상,선옥335화홍대8호재수분후58천이상;체도생리성숙시정단958、선옥335、홍대8호화려옥16자립함수량분별위33.74%、28.86%、32.05%화35.24%;정단958화려옥16자립함수량재생리성숙함수량시채용궤계수획,기자립손실솔부합궤계작업질량지표규정적범위（자립손실솔0.84%≤2%）,자립파쇄솔미체궤계작업질량지표규정적범위（자립파쇄솔10.12%1%）,설명정단958화려옥16품충재생리성숙시불괄합사용전위입식연합수획자립궤진행수획。[결론]위료급improving the maize harvest index under delayed harvesting제공상관이론의거。
[Objective] The aim of this study was to investigate the dry matter accumulation,moisture content in maize kernel and their influences on mechanical harvesting.[Methods] Using Zhengdan 958,Xianyu 335,Hongda 8 and Liyu 16 as experimental materials,we preliminarily measured the dynamic changes of dry matter accumulation and moisture content with the days after pollination lasted,and investigated the effect of moisture content in kernels on mechanical harvesting of Zhengdan 958 and Liyu 16.[Results] During summer growing season,Zhengdan 958 and Liyu 16 became physiologically mature and suitable for harvesting at about 51 days after pollination,Xianyu 335 and Hongda 8 required 58 days to become physiologically mature and suitable for harvesting after pollination.At physiologically mature stage,the moisture contents in kernels of Zhengdan 958,Xianyu 335,Hongda 8 and Liyu 16 were respectively 33.74%,28.86%,32.05% and 35.24%,respectively.Adopting mechanical harvesting at physiologically mature stage,the kernel loss rate of Zhengdan 958 and Liyu 16 was consistent with the range of mechanical operation index（kernel loss rate of 0.84%≤2%）,while the percentage of broken kernels did not accord with the range of mechanical operation index（kernel crashing rate of 10.12%≧1%）.The results indicate that Zhengdan 958 and Liyu 16 are not suitable for mechanical harvesting using full feeding combine havester.[Conclusion] This study provided theoretical basis for improving the maize harvest index under delayed harvesting.